List of current systems for electric rail traction

This is a list of the power supply systems that are, or have been, used for tramway and railway electrification systems.

Note that the voltages are nominal and vary depending on load and distance from the substation.

Many modern trams and trains use on-board solid-state electronics to convert these supplies to run three-phase AC induction motors.

Key to the tables below

  • Volts: voltage or volt
  • Current:
  • DC = direct current
  • xx Hz = frequency in hertz (alternating current (AC))
  • AC supplies are single-phase, except where marked three-phase
  • Conductors:
    • overhead line or
    • conductor rail, usually a third rail to one side of the running rails
      • Conductor rail can be:
        • top contact: oldest, least safe, affected by ice, snow and leaves
        • side contact: newer, safer, less affected by ice, snow and leaves
        • bottom contact: newer, safer, least affected by ice, snow and leaves
    • Read more
    This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/List_of_current_systems_for_electric_rail_traction

    VDC

    VDC is a three-letter abbreviation with multiple meanings:

    In technology:

  • Virtual design and construction, modeling software and techniques to design and evaluate possible construction processes
  • Volts of direct current
  • Video display controller, a computer graphics chip
  • Vehicle Dynamics Control, a means of increasing vehicle stability through a combination of throttle restriction and braking
  • Velocity drift chamber, a type of particle detector used to test a gas
  • Virtual data center, a data center that operates using virtualization technology
  • Virtual DataCine, a digital image processing technique for converting motion picture film to video
  • Violations Documentation Center, a Syrian organisation documenting deaths, detentions, missing persons and kidnappings due to the Syrian civil war, also known as the Center for Documentation of Violations in Syria

    • Military

  • Volunteer Defence Corps (Australia)
  • Royal Hong Kong Regiment (The Volunteers)

    • Other:

  • Valve Developer Community, the official wiki for developers of games and mods based on the computer game Half-Life 2
    • Read more
    This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/VDC

    Podcasts:

    VDC

    ALBUMS

    Best of UMM - Underground Music Movement

    Released 2007

    Insane House Sessions (Mixed by Sgt. Slick)

    Released 2004

    Tinted Globalhouse

    Released 2002

    X-Tremely Fun: Step Aerobic Nonstop, Volume 2

    Released 2000

    Dream World

    Released 1996

    Sotterranea, Volume 2

    Released 1995

    Now Dance: Summer 94

    Released 1994

    It's the Ultimate Dance Album

    Released 1994
    Email this Page Play all in Full Screen Show More Related Videos
    PLAYLIST TIME:

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    Best blue-chip ETFs to buy as Donald Trump’s trade war escalates

    Invezz 29 Mar 2025
    The most notable names are the SPDR Gold Shares ETF (GLD), Vanguard Utilities ETF (VPU), Vanguard Health Care ETF (VHT), and Vanguard Consumer Staples ETF (VDC).SPDR Gold Shares ETF (GLD) ... The VDC ETF tracks the biggest companies in the industry.
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